[Tracking]: Lightspeed receiver support

OpenLogi uses the existing Unifying-compatible HID++ path for supported Lightspeed and Nano receivers. Support is added by receiver PID, so this issue tracks which PIDs are recognised and which devices have been tested.

Receiver coverage

PID	Family	Device	Status
c52b, c532	Unifying	Multiple devices	Supported
c537	Nano	G602	#684 open; hardware test needed
c548	Bolt	Multiple devices	Supported
c53f	Lightspeed	G305	Supported by #388
c539	Lightspeed	G903 LS	Supported by #510
c547	Lightspeed	G502 X LIGHTSPEED	Supported; tested in #459
c53a, c53d, c541, c545, c54d	Lightspeed	No confirmed device report	Not tested

PR status

PR	State	Main work
#351	Open	Multiple Lightspeed PIDs and RGB effects
#369	Open	G305 support with extra gaming-mouse features
#388	Merged	c53f receiver recognition
#459	Open	Onboard profiles, tested with a G502 X
#510	Merged	c539 receiver recognition
#684	Open	G602 Nano receiver c537 recognition

Current direction

The merged receiver work routes Lightspeed and Nano receivers through the existing Unifying-compatible path. A separate route type is not needed unless real hardware shows different protocol behaviour.

Receiver names can still be shown as Lightspeed or Nano in the UI without changing the route.

Still needed

• Test #684 with a real G602. Logitech lists its Nano receiver as 046d:c537.
• Confirm devices and hardware behaviour for c53a, c53d, c541, c545, and c54d.
• Check #462, which was reported as Bolt even though the mouse uses Lightspeed.
• Add a Lightspeed option to device_support.yml and update its outdated receiver wording.

Related but separate: #392 is a wired device, #461 tracks device artwork, and gaming-mouse features are tracked separately.